I'm betting they did Mustique's Shark Cave dive - an advanced drift dive with schools of black tip reef sharks.
I think the tabloids just discovered that Catherine is certified, but I bet she's been so for awhile. The Middleton's have vacationed in Mustique for years haven't they, ample time for all of their kids to become divers if so inclined.
The deal with sharks and being in the ocean is the same as various animals and being in the wilderness on land.
I'll give a couple of examples: for most of the year the many deer that roam through my mom's California town are harmless and they shy away when I walk by, however, in the fall during the rut, I give the males a wide berth as they can be aggressive. I also know that very rarely (every couple of years) a mountain lion kills one of those deer somewhere in town, and mountain lions definitely will attack and kill humans - yet I still wander around the area. Last summer I ran into a Mountain Lion while camping in Big Sur. I've also seen bears almost every time I visit Yosemite. I still visit these places because any risk from wild animals is small, especially if I am alert and aware.
The marine environment is no different than land, most of the animals, including most sharks, are harmless and the dive operators who run scuba trips in Mustique know what marine animals are likely to be where and whether they are of concern.
I wonder, do the Cambridge's protection officers have to be scuba certified and go on the dives too?
